Computer Networks
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Q121.DNS stands for _____?
Correct Answer: B
DNS stands for Domain Name System. It translates human-friendly domains to IP addresses.
Q122.What do we call a computer program that can spread across computers and networks by making copies of itself?
Correct Answer: A
A Computer Virus is a malicious program that replicates itself by attaching to host files.
Q123.Among the following options, which are the five main components of a communication system?
Correct Answer: B
The five foundational parts of a communication system are Message, Sender, Receiver, Medium, and Protocol.
Q124.If you want to create a field to store a person's address in a table, which data type should you use?
Correct Answer: A
A textual address with alphanumeric characters is stored using the String data type.
Q125.Why is max polling helpful?
Correct Answer: B
Max polling reads the maximum available buffered I/O data in a single cycle, reducing execution overhead.
Q126.You want to distinguish roads, mountains, and houses in satellite imagery. Which technique is most appropriate?
Correct Answer: A
Image classification groups pixels or regional grids into semantic categories like terrain, structures, or roads.
Q127.If systems are overloaded with data, what is the safest action to prevent a crash?
Correct Answer: D
Load balancing distributes incoming data across multiple systems to reduce overload. Throttling limits the rate of incoming requests to keep the system stable. These methods help prevent crashes while keeping services running.
Q128.In a monolithic network architecture, what is true?
Correct Answer: A
A monolithic network architecture typically connects all devices to a single, central switch or hub, centralizing traffic and management but introducing a single point of failure.
Q129.BIOS is used for?
Correct Answer: B
BIOS (Basic Input/Output System) is firmware that starts up the computer. It initializes hardware like CPU, memory, and storage when the computer is powered on. BIOS loads the operating system from the hard drive into memory. It also provides basic communication between the OS and hardware devices.
Q130.In networking, if a device can send data but never receives a reply, what type of issue is this?
Correct Answer: C
If a device can send data but never receives a reply, the problem is likely in the network path. Causes include network congestion, faulty routers, or incorrect routing tables. It is not necessarily a client-side or server-side problem if both are working correctly.
Q131.In NLP, what does the term gradient usually refer to?
Correct Answer: B
In NLP and machine learning, a gradient represents the rate of change of the loss function with respect to the model's parameters (weights). It guides optimization algorithms like gradient descent during training.
Q132.What does the "number of messages in a TCP connection" indicate?
Correct Answer: B
In a TCP connection, communication happens via segments. The number of messages indicates how many segments were sent and received, providing reliable transmission details.
Q133.Transformers are used in?
Correct Answer: B
Transformers are a type of neural network architecture primarily used in Natural Language Processing (NLP) for tasks like translation, text generation, and summarization. Examples include GPT and BERT.
Q134.In which network topology, one long cable acts as a backbone to link all the devices in a network?
Correct Answer: C
In a Bus Topology, a single central cable (backbone) links all devices.
Q135.Which of the underlying network is a network with a size between a LAN and a WAN, normally covering a town or city?
Correct Answer: C
A MAN (Metropolitan Area Network) covers a geographical area larger than a LAN but smaller than a WAN, typically spanning a city.
Q136.What is the time complexity of searching for an element in a balanced binary search tree?
Correct Answer: C
In a balanced Binary Search Tree (BST), the height is O(log n). Since each step of search eliminates half of the remaining subtrees, the search time complexity is O(log n).
Q137.Which of the following is NOT a type of network device?
Correct Answer: A
A protocol is a set of logical rules for data communication, not a physical hardware device like a switch, router, or gateway.
Q138.Which of the following is NOT a paper size in MS-Word 2016?
Correct Answer: C
Landscape is a page orientation (horizontal vs vertical), whereas Letter, Legal, Executive, A4, and A3 are standard paper sizes.
Q139.Which computer network type connects devices in a larger geographical area, such as districts or cities?
Correct Answer: C
MAN (Metropolitan Area Network) connects computer users and devices in a geographic area larger than a LAN but smaller than a WAN, such as a city or district.
Q140.What is the most suitable range of Class 2 Bluetooth wireless technology for information transmission?
Correct Answer: B
Standard Class 2 Bluetooth devices (commonly found in phones and headsets) have a practical operating range of approximately 10 meters or 30 feet.